Improvement in device for turning saw-logs



NPETERS, PNOTWLITHOGRAPNEIL WASHINGTON D G dilated Stabat WARRENRICHARDSON, OF COLFAX, CALIFORNIA.

Letters Patent No. 90,959, dated .7u-ne 8, 1869.

IMPROVEMENT IN DEVICE FOR TURNING SAW-LOGS.

Q-Or- The Schedule referred to in these Lettera Patent and making partof the same.

To all whom it may concern:

Be it known that I, WARREN RroHARDsONyof Colfax, county Of P lacer,State of California, have invented an-Adjustable Sliding Block forSaw-Mills; and I do hereby declare the following description andaccompanying drawings are sufficient to enable any person skilled in theart Or science to which it most nearly appertains, to make and use mysaid iiivention or improvement without further invention Or experiment.

My invention relates to a new and improved device for canting saw-logs,after they have been faced by the' saw On one side, and require to beturned, so that the remaining sides may also be faced; and, in fact, itis used to slide the log or stick being sawed to its place on thecarriage, at any stage of the sawing, where care is to be exercised toprevent splitting or injury to the edges Or corners ofthe stick.

To more fully illustrate and explain my invention,- reference is had tothe accompanying drawings, formv ing a part Of-A this specification, ofwhich- Figure 1 is a sectional elevation.

Figure 2 is a plan.

Similar letters of reference in each of the figures indicate like parts.

I iii-st construct a solid and substantial frame, .composed of thebottom timbers M, upper timbers` S, and cross-timbers O, capable ofsupporting the weight Of the heaviest logs. Y

The upper timbers S are providedwith mortises, which extend from thefront end to near their middie, and pass entirely through the timbers.-The lower timbers are also mortised directly beneath the mOrtise in theupper timbers, and are, in fact, a continuation of the same.

In these mortises I place blocks B B, the upper ends of which arebevelled to an incline, the lower portion of the incline beingtowardsthe front of the carriage or frame.

These blocks are arranged to slide. up and down by means of eccentrics II, placed on a shaft, C which passes across the lower part of the frame.

When lowered, the upper ends of the incline blocks are on a levelwiththe upper face Of the timbers S S, thus being entirely out of theway, so as to allow the logs to be rolled along'over the frame andplaced upon the carriage. The lower ends of the blocks upon which theeccentrics operate, are cutin a circle, so as to give as muchbearing-surface as possible upon the eccentrics.

The frame is set near the carriage upon which the 'logs are placed, andat right angles to it, and the logs are first. rolled over it and On tothe carriage previous to sawing. One side Of the log is then placedOrsawed off, and the carriage run back to its former position.

The next step to be taken is to turn the log, so as to bring anotherside 'to the saw, in Order that it may be squared previous to sawing itinto lumber' and 7 this is donc by raising the blocks B B, so as topresent an inclined plane upon which the log may be placed, by merelyturning it Over, so that the side already faced will fall upon theblocks, after which it can easily be slid back to its place upon thecarriage, in the proper position for taking oi'l` the slabs from theother sides.

The device is especially useful and convenient for cant-ing the log intoposition upon the carriage while vsawing it into scantlings or squaretimbers, as, when it has been sawed Of the .proper width in onedirection, and itis desired tO turn it, all that is necessary is tolower the blocks B B, and, as the log is sawed, it is moved over uponthe front ends of the timbers S.

The shaft C is then turned by means of a belt-connection, bevel-gear, Orother device operated by the power which runs the mill.

This causes the eccentrics I I tO raise the blocks B B, and consequentlythe timbers, giving it a pitch or incline, when, by the use ofdog-hooks, it may be canted into the proper position for cutting it inthe Opposite direction.

. The usual manner Of cauting lthe logs to their posi-- tion on thecarriage is to place wedges under them, which consumes much time, and isvery laborious; while, with my device, Athe logs can be handled withgreat ease and. celerity.

Having thus described my invention,

Vhat I claim, and desire to secure by Letters Patent, is-

The blocks B B, sliding vertically in mortises, and having bevelledtops, in combination with the eccentrics I I and shaft O, the wholebeing constructed and arranged substantially -as and for the purpose setforth.

In witness whereof, I have hereunto set my hand and seal.l

Witnesses:

- GEO. H. STRONG,

GEORGE SPAULDING.

WARREN RIOHARDsON. [as]

